Tion roller bearing syndicate



(No Model.) 2 811 Sheet 1. F. PURDON,-H. E. WALTERS &; W'. H. :WOODGOC'K.

ROLLER BEARING. I

Patented Aug. 14, 1894.

(No Model.) 2 Sheets-Sheet 2.

, P. PURDON H; E. WALTERS 8v W. H. WOODCOCK;

- ROLLER BEARING.

No. 524,397. Patented Aug. 14, 1894.

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U ITED STATES PATENT PRIC FREDERICK PURDON, HARRY ERNEs'r ALTERs NDfwILLIAM HUGH WooDCoCK, OF,LONDON,,ENGLAND, .AssICNoRs TO E-A TIERIC- TICN RCLLER BEARING SYNDICATE, LIMITED, OF sAME PLACE.

ROLL-ER-TBEARINIG.

SPE IFICATION forming part or Letters Patent No. 524,397, dated August 14, 1894. Application filed January 2, 1894. Serial No. 495,427. (No model.) Patented in England $eptember 30, 1893. No. 18,368.

To all whom it may concern.-

Be it known that we, FRE ERICK PURDON an d HARRY ERNEST WALTERs, residing at No.

2Great George Street, WVestminster, London, in the county of Middlesex, and WILLIAM HUGH WOODCOCK, residing at No. Auckland Hill, West Norwood, London, in the county of Surrey, England, subjects of the Queen of Great Britain and Ireland, have invented new and useful Improvements in Roller-Bearings, (for which we have obtained a patent in Great Britain, N0. 18,368,bearing date of September 30, 1893,) of which the following is a specification.

Our invention has reference to improvements in roller bearings and has for its object to diminish friction between journals and their bearings. I 1

1n the drawings, Figure 1 is an end'view of a railway axle box, the left halt of the axle box being in section. Fig. 2 isa longitudinal I section through the axle box.

a Is the journal at the endof the axle of a railway vehicle.

b is the axle box usually made of cast iron. 0 isa liner of steel, wrought iron case hardened, chilled cast iron, or other suitable material. Between the liner 0 and the journal at are arranged a set'of rollers d of hardened steel, or other suitable material. The inner diameterof the liner 0 is equal to the external diameter of the journal 0. plus twice the 1 diameter of one of the rollers d.

The metal cover e is bolted or otherwise fixed to the inner side of the axle box I) and has upon it a special circular path f. an internal piece 6 is fitted into the outer cover 9 of the axle box and is provided with a special path f, this path being similar to that atf. This cap or cover g is bolted or otherwise attached to the axle box, outside, and has a cirforms of the knobs Z, Z are so designed as to bear upon the grooved ends n, respectively, of the rollers d, and the forms of the knobs m, m are so designed as to bearupon the paths f, f and are kept in position by the live rings jaj I One most important feature of our invention is that. the forms of the knobs Z, Z, 'm,m on the dumb-bell rollers o' and of the grooved paths 'n, n of the rollers d and of'the stationary pathsfif fixed to the axle box, and of the live rings j, j are so designed that each knob bears only upon two circles equidistant from a plane containing the largest cross section of the knob at right angles to its axis of rotation. The relative diameters of rollers, dumb-bell rollers and fixed paths are so chosen that there is no sliding friction but only rolling friction between moving surfaces Which touch each other. The dumb-bell rollers 'i are prevented from escaping in a radial direction by means of the live ringsj and j. Each of -these rings consists of two similar halves held together by screws 0 and the width of the curved path inside each ring can thus be adj usted. It will be clearly understood that the expression live ring describes the fact that the rings rotate round the axis of the journal as a center when the axle is in motion. Lateral movement of the dumb-bell rollers c' is limgrooves of the paths f, f and similarly lateral movement of the rollers'd is limited by the knobs Z, Z of the dumb-bell rollers 11, running in the grooved ends n, n of the rollers d.

What we claim is-- 80.. ited by the knobs m, m running in the 1. The combination, with a shaft, and a circular bearing concentric therewith; of the series of rollers d interposed between the said shaft and bearing and provided with grooved ends 11. n; a series of rollers 'i interposed between the rollers d and provided with knobs Zm and Z m at their ends, the said knobs ll running in the grooved ends n n; the stationary end pieces provided with the paths f and 5 f" for the knobs m and m to run in; and the grooved rings jj encircling all the knobs m and m, substantially as set forth.

'2. The combination, with a shaft, and a circular bearing concentric therewith; of the sories of rollers d interposed between the said halves and provided with adjusting screws 0 shaft and bearing and provided with grooved for drawing the half rmgs together, substanends n n; a series of rollers 2 interposed betially as set forth.

; tween the rollers d and provided with knobs 4 5 Z m and Z m at their ends, the said knobs Z Z running in the grooved ends "rt n; the sta- WILLIAM HUGH WOODCOCK tionary end pieces provided with the paths f andf' for the knobs m and m to run in; and Vitnesses: the grooved rings jj encircling all the knobs JOHN P. ODONNELL,

10 m and 772", each said ring being formed in WILLIAM A. HANDY. 

